Recover WiFi key (Aircrack) on Android?

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http://androidforums.com – So here's what happened. Someone changed the key for the office WiFi router, and I don't have physical access to the router. Now all I know is that the key uses WPA2. I could of course bring in my personal laptop, but it's pretty heavy and I'd rather be able to do everything on my phone. Is it possible to get Aircrack, Aircrack-ng or an app that lets you crack WiFi keys on Android? My phone is a Samsung Galaxy 551. It's also rooted, so I can install apk's from outside the market. (General)